Lock and locking device



' Feb. 24. 1925. 1,527,593

" J. A. LOEB Locx AND Locum DEVICE Fil ed Feb'. 6, 1924,

IN KEN TOR.

Patented Feb. 24, 1925.

PATENT OFFICE.

JACQUES ARTHUR LOEB, OF NEW YORK, N. Y.

LOCK AND LOCKING DEVICE.

Application filed February 6, 1924.

To all whom it may concern:

Be it known that I, JAo Uns ARTHUR Lone, a citizen of the United States,residing at 97 Fort lVashington Avenue, New York city, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Locks and Locking Devices, of which the following is aspecification.

The object of my invention is to provide a means whereby a lock orlocking device can be operated only by inserting the key through theouter face of the look at a point remote from the operating point of thelooking mechanism.

To this end my said invention contemplates the use of a keyhole or keyslot so constructed that, at the point where the key opens the lock orlocking device, the keyhole itself is too small to admit the key.

Furthermore, the key is to fit the keyhole at a point remote from thepoint where said key opens the lock or locking device.

Referring to the accompanying drawings:

Figure 1, is a front face view of one form of the invention.

Figure 2, is a plan view of one form of key for lock shown in Figure 1.

Figure 3, is a cross-section through the head 9, of key shown in Figure2.

Figures t and 5, are front face views of other forms of said lock.

Referring to the drawings in detail, the invention is illustrated asapplied to a lock with an elongated keyhole 6, having one end 7, soconstructed that it fits the unlocking end 9 of key shown in Figure 2.

The keyhole 6, is so constructed that the point 7, where the key entersthe outer surface of the lock is remote from the point 10, where keyopens or operates the lock or locking device, and all other parts of thekeyhole are consequently only wide enough to admit or fit the shaft 8 ofthe key shown in Fig ure 2.

In practice my locking device is operated in the following manner:

1. The key is inserted through the outer surface of the lock at thepoint 7 sufficiently deep, so that the prongs or enlarged portion 9,will be below the surface of the lock.

2. The key is then moved laterally to the Serial No. 690,981.

point 10, where the prongs or enlarged portion 9, engage the operatingmechanism of the lock.

3. The key is then manipulated (either by turning or depressing or othersuitable operation) so as to move the lever ll, into unlocking position.

a. The key is then moved laterally back to point 7 and withdrawn fromthe lock.

While only one form of key is shown in my drawing, it is to beunderstood that the key may be of any suitable shape, the only necessaryfeature being that the shaft of the key is smaller than the enlargedportion ad jacent to the end thereof.

Moreover, it is obvious that the keyhole may be of any desired shape, itbeing only necessary that one end or portion of the keyhole shallconform to the enlarged portion of the key.

Furthermore, while the slot shown in my drawing is straight, it isobvious that the same purpose may be accomplished if the slot were notstraight but were a curved or broken line.

It will be apparent from the foregoing, that quite a simple andeiiicient arrangement has been devised by me for carrying out thepurpose of the invention, and the operation of the same will be readilyunderstood.

I claim:

1. A locking device with a laterally elongated keyhole which fits thekey at a point remote from the point at which the key operates thelocking device.

2. A locking device having a. surface slot one end of which slot isadjacent to the operating point of the locking mechanism and the otherend of which slot is laterally remote from the operating point of suchmechanism, and is of such shape as to admit the key with which the lockis to be operated.

3. A locking device having for the reception of the key a surface slotextending from a point adjacent to the operating mechanism to a pointremote therefrom, said slot being adapted for the insertion of the keyat a point remote from the operating mechanism.

JACQUES ARTHUR LOEB.

